/Engine/Plugins/Runtime/MeshModelingToolset/Source/MeshModelingTools/Public/ToolActivities/PolyEditInsertEdgeActivity.h
This should get emitted when selecting the first point in an edge insertion so that we can undo it.
class FGroupEdgeInsertionFirstPointChange : public [FToolCommandChange](API\Runtime\InteractiveToolsFramework\FToolCommandChange)
bool
bHaveDoneUndo
int32
ChangeStamp